Flooring Calculator
Work out how much flooring to buy. Enter your room dimensions and a waste allowance to get the finished square footage, the material area to purchase, and an estimated cost.
Updated June 2026 · Free · No sign-up
Your project
Estimate
Flooring to buy · Includes waste allowance
- Finished area
- 180ft²
- Estimated material cost
- $891.00
Estimates are guidance only and exclude tax, labor, and site conditions unless stated. Confirm with a local pro.
How it's calculated
No black boxes — here is the exact math behind your estimate, so you can check it or adapt it for your own quote.
- 1
Finished area = length × width - 2
Flooring to buy = finished area × (1 + waste% ÷ 100) - 3
Cost = flooring to buy × price per ft²
Worked example
A 15 ft × 12 ft room with a 10% waste allowance.
Inputs
- Room length
- 15 ft
- Room width
- 12 ft
- Waste allowance
- 10 %
- Price per ft²
- 4.5 $/ft²
Result
- Flooring to buy
- 199 ft²
- Finished area
- 180 ft²
- Estimated material cost
- $891.00
Compare local pros for flooring
An estimate gets you a budget. A few competing quotes get you the real price. Tell us about the job and we'll help you find vetted contractors nearby.
Flooring cost by state
Material and labor prices vary by region. See a localized estimate for flooring: